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~ 12/25/2005 04:42:00 PM ~
Sunday, December 25, 2005



 [23 of deC]

went to twinies' house to "study" physics...
congrats to me can??
at least i did 1 chap of gravitation!!!
which is like.. though one of the shortest.. but hardest topic!!


man.. but if u ask me anything thing about it...
i dunno!!!!
i juz copy blindly !!!
hmm.. let me test myself..


escape speed of a satellite = square root (2GM/R) ?
opps.. is Greater or equal to..


F= GMm/r^2

grav. field strenght : g=F/m= GM/r^2 , r>/= R

grav. potential : fai = - GM/r , r>/=R

W = change in potential

grav. potential energy : U = fai(m) = -GMm/r

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